Stopper for bottles



FIG. 1 is a front view of a stopper for bottles, the rear identical thereto;

FIG. 2 is a side view of a stopper for bottles, the other side being identical thereto;

FIG. 3 is a bottom view of the stopper for bottles; and,

FIG. 4 is an isometric perspective view of the stopper for bottles. 

CLAIM We claim the ornamental design for a stopper for bottles, substantially as shown and described. 